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Finding the Fourth Proportional to 346,935.56, 520,479.81 and 147,426.48

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Solution

The fourth proportional to 346,935.56, 520,479.81 and 147,426.48 is: 221,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,935.56 : 520,479.81 = 147,426.48 : x
  2. Step 2: Convert to fraction form
    346,935.56/520,479.81 = 147,426.48/x
  3. Step 3: Cross multiply
    346,935.56x = 520,479.81 × 147,426.48
  4. Step 4: Simplify right side
    346,935.56x = 76,732,506,299.37
  5. Step 5: Solve for x
    x = 76,732,506,299.37/346,935.56
  6. Step 6: Final answer
    x = 221,172.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.